Select the most appropriate option to fill in blank No. 4.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. primary.
Context: The sentence describes electricity being used instead of gasoline or diesel. Here, the word should indicate that electricity is the main or chief power source.
Meaning of the words:
Neutral: means not taking sides or without strong effect; not correct here.
Hard: means difficult or solid; not suitable.
Primary: means main, chief, or most important.
Internal: means inside or within; does not fit the context.
Correct word: Primary
Reason: Electricity is the primary power source of electric vehicles, which makes sense in contrast to gasoline or diesel.
Final Sentence: Using electricity as their primary power source instead of gasoline or diesel, EVs produce zero tailpipe emissions, reducing the overall carbon emissions from transportation.
Hence, the chosen option is correct.